code.grnet.gr Git - pithos/blob - src/gr/ebs/gss/client/StatusPanel.java

   1 /*
   2  * Copyright 2007, 2008, 2009 Electronic Business Systems Ltd.
   3  *
   4  * This file is part of GSS.
   5  *
   6  * GSS is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * GSS is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with GSS.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19 package gr.ebs.gss.client;
  20
  21 import gr.ebs.gss.client.rest.GetCommand;
  22 import gr.ebs.gss.client.rest.RestException;
  23 import gr.ebs.gss.client.rest.resource.QuotaHolder;
  24 import gr.ebs.gss.client.rest.resource.UserResource;
  25
  26 import com.google.gwt.core.client.GWT;
  27 import com.google.gwt.i18n.client.DateTimeFormat;
  28 import com.google.gwt.resources.client.ClientBundle;
  29 import com.google.gwt.resources.client.ImageResource;
  30 import com.google.gwt.user.client.DeferredCommand;
  31 import com.google.gwt.user.client.IncrementalCommand;
  32 import com.google.gwt.user.client.ui.AbstractImagePrototype;
  33 import com.google.gwt.user.client.ui.Composite;
  34 import com.google.gwt.user.client.ui.HTML;
  35 import com.google.gwt.user.client.ui.HasHorizontalAlignment;
  36 import com.google.gwt.user.client.ui.HorizontalPanel;
  37
  38 /**
  39  * The panel that displays a status bar with quota information.
  40  */
  41 public class StatusPanel extends Composite {
  42         public static final boolean DONE = false;
  43         private HTML fileCountLabel = new HTML("");
  44         private HTML fileSizeLabel = new HTML("");
  45         private HTML quotaIcon = new HTML("");
  46         private HTML quotaLabel = new HTML("");
  47         private HTML lastLoginLabel = new HTML("");
  48         private HTML currentlyShowingLabel = new HTML("");
  49
  50         /**
  51          * An image bundle for this widget's images.
  52          */
  53         public interface Images extends ClientBundle {
  54
  55                 @Source("gr/ebs/gss/resources/windowlist.png")
  56                 ImageResource totalFiles();
  57
  58                 @Source("gr/ebs/gss/resources/database.png")
  59                 ImageResource totalSize();
  60
  61                 @Source("gr/ebs/gss/resources/redled.png")
  62                 ImageResource redSize();
  63
  64                 @Source("gr/ebs/gss/resources/greenled.png")
  65                 ImageResource greenSize();
  66
  67                 @Source("gr/ebs/gss/resources/yellowled.png")
  68                 ImageResource yellowSize();
  69
  70                 @Source("gr/ebs/gss/resources/xclock.png")
  71                 ImageResource lastLogin();
  72         }
  73
  74         private final Images images;
  75
  76         /**
  77          * The constructor of the status panel.
  78          *
  79          * @param theImages the supplied images
  80          */
  81         public StatusPanel(Images theImages) {
  82                 images = theImages;
  83                 HorizontalPanel outer = new HorizontalPanel();
  84                 outer.setWidth("100%");
  85                 outer.setHorizontalAlignment(HasHorizontalAlignment.ALIGN_LEFT);
  86
  87                 HorizontalPanel left = new HorizontalPanel();
  88                 left.setSpacing(8);
  89                 HorizontalPanel middle = new HorizontalPanel();
  90                 middle.setSpacing(8);
  91                 HorizontalPanel right = new HorizontalPanel();
  92                 right.setSpacing(8);
  93                 outer.add(left);
  94                 outer.add(middle);
  95                 outer.add(right);
  96                 left.add(new HTML("<b>Totals:</b> "));
  97                 left.add(AbstractImagePrototype.create(images.totalFiles()).createImage());
  98                 left.add(fileCountLabel);
  99                 left.add(AbstractImagePrototype.create(images.totalSize()).createImage());
 100                 left.add(fileSizeLabel);
 101                 quotaIcon.setHTML(AbstractImagePrototype.create(images.greenSize()).getHTML());
 102                 left.add(quotaIcon);
 103                 left.add(quotaLabel);
 104                 middle.add(AbstractImagePrototype.create(images.lastLogin()).createImage());
 105                 middle.add(new HTML("<b>Last login:</b> "));
 106                 middle.add(lastLoginLabel);
 107                 right.add(currentlyShowingLabel);
 108                 outer.setStyleName("statusbar-inner");
 109                 left.setStyleName("statusbar-inner");
 110                 middle.setStyleName("statusbar-inner");
 111                 right.setStyleName("statusbar-inner");
 112                 outer.setCellHorizontalAlignment(right, HasHorizontalAlignment.ALIGN_RIGHT);
 113
 114                 initWidget(outer);
 115
 116                 // Initialize and display the quota information.
 117                 DeferredCommand.addCommand(new IncrementalCommand() {
 118                         @Override
 119                         public boolean execute() {
 120                                 GSS app = GSS.get();
 121                                 UserResource user = app.getCurrentUserResource();
 122                                 if (user == null || app.getFolders().getRootItem() == null)
 123                                         return !DONE;
 124                                 displayStats(user);
 125                                 return DONE;
 126                         }
 127                 });
 128         }
 129
 130         /**
 131          * Refresh the widget with the provided statistics.
 132          */
 133         private void displayStats(UserResource user) {
 134                 QuotaHolder stats = user.getQuota();
 135                 if (stats.getFileCount() == 1)
 136                         fileCountLabel.setHTML("1 file");
 137                 else
 138                         fileCountLabel.setHTML(stats.getFileCount() + " files");
 139                 fileSizeLabel.setHTML(stats.getFileSizeAsString() + " used");
 140                 long pc = stats.percentOfFreeSpace();
 141                 if(pc<10) {
 142                         quotaIcon.setHTML(AbstractImagePrototype.create(images.redSize()).getHTML());
 143                         quotaLabel.setHTML(stats.getQuotaLeftAsString() +" free");
 144                 } else if(pc<20) {
 145                         quotaIcon.setHTML(AbstractImagePrototype.create(images.yellowSize()).getHTML());
 146                         quotaLabel.setHTML(stats.getQuotaLeftAsString() +" free");
 147                 } else {
 148                         quotaIcon.setHTML(AbstractImagePrototype.create(images.greenSize()).getHTML());
 149                         quotaLabel.setHTML(stats.getQuotaLeftAsString() +" free");
 150                 }
 151                 final DateTimeFormat formatter = DateTimeFormat.getFormat("d/M/yyyy h:mm a");
 152                 lastLoginLabel.setHTML(formatter.format(user.getLastLogin()));
 153         }
 154
 155         /**
 156          * Requests updated quota information from the server and refreshes
 157          * the display.
 158          */
 159         public void updateStats() {
 160                 final GSS app = GSS.get();
 161                 UserResource user = app.getCurrentUserResource();
 162                 GetCommand<UserResource> uc = new GetCommand<UserResource>(UserResource.class, user.getUri(), null){
 163                         @Override
 164                         public void onComplete() {
 165                                 displayStats(getResult());
 166                         }
 167
 168                         @Override
 169                         public void onError(Throwable t) {
 170                                 if(t instanceof RestException)
 171                                         app.displayError("Unable to fetch quota:" +
 172                                                                 ((RestException)t).getHttpStatusText());
 173                                 else
 174                                         app.displayError("System error fetching quota:" +
 175                                                                 t.getMessage());
 176                                 GWT.log("ERR", t);
 177                         }
 178                 };
 179                 DeferredCommand.addCommand(uc);
 180         }
 181
 182         /**
 183          * Displays the statistics for the current folder.
 184          *
 185          * @param text the statistics to display
 186          */
 187         public void updateCurrentlyShowing(String text) {
 188                 if (text == null)
 189                         currentlyShowingLabel.setText("");
 190                 else
 191                         currentlyShowingLabel.setHTML(" <b>Showing:</b> " + text);
 192         }
 193
 194 }